. The elements of botany for beginners and for schools. Plants. 28 BUDS. [SECTION 4. formed, they are concealed all summer long under the base of the leaf-stalk, which is then hollowed out into a sort of inverted cup, like a candle- extinguisher, to cover them ; as in the Locust, the Yellow-wood, or more strikingly in the Button-wood or Plane-tree (Fig. 74).. 50. The leaf-scars, so conspicuous in Fig. 72, 73, under each axillary bud, mark the place where the stalk of the subtending leaf was attached until it fell in autumn. 51. Scaly Buds, which are well represented in Fig. 72, 73, commonly be
. The elements of botany for beginners and for schools. Plants. 28 BUDS. [SECTION 4. formed, they are concealed all summer long under the base of the leaf-stalk, which is then hollowed out into a sort of inverted cup, like a candle- extinguisher, to cover them ; as in the Locust, the Yellow-wood, or more strikingly in the Button-wood or Plane-tree (Fig. 74).. 50. The leaf-scars, so conspicuous in Fig. 72, 73, under each axillary bud, mark the place where the stalk of the subtending leaf was attached until it fell in autumn. 51. Scaly Buds, which are well represented in Fig. 72, 73, commonly belong to trees and shrubs of countries in which growth is suspended dur- ing winter. The scaly coverings protect the tender young parts beneath, not so much by keeping out the cold, which of course would penetrate the bud in time, as by shielding the interior from the effects of sudden changes. There are all gradations between these and 52. Naked Buds, in which these scales are inconspicuous or wanting, as in most herbs, at least above ground, and most tropical trees and shrubs. But nearly related plants of the same climate may differ widely in this re- spect. Rhododendrons have strong and scaly winter-buds ; while in Kalmia they are naked. One species of Viburnum, the Hobble-bush, has com- pletely naked buds, what would be a pair of scales developing into the first leaves in spring; while another (the Snowball) has conspicuous scaly buds. 53. Vigor of Vegetation from strong buds. Large and strong buds, like those of the Horse-chestnut, Hickory, and the like, contain several leaves, or pairs of leaves, ready formed, folded and packed away in small compass, just as the seed-leaves of a strong embryo are packed away in the seed: they may even contain all the blossoms of the ensuing season, plainly visible as small buds. And the stems upon which these buds rest are filled with abundant nourishment, which was deposited the summer before in the Fig. 74. An axillary bud, concealed und
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectplants, bookyear1887
